Time-damper mechanism.



No. 754,446. PATENTBD MAR. 15, 1904.

' W. HARTZELL.

TIME DAMPER MECHANISM.

APPLICATION FILED NOV.19, 1903.

N0 MODEL.

JNVENTOR.

TNE Norms PETERS m. PHOTO-L'ITHO.. wunmuron, u. c.

ATTORNEY mama MarchiB, 1904.

PATENT OFFICE.

W L IAM HARTZELL, or PHILADELPHIA, PENNSYLVANIA.

TIME-DAMPER MECHANISM.

sPEoIFIcATI'oN' forming part of Letters Patent No. 754,446, dated March'15, 1964.

Application filed November 19, 1903. erial IIo. 181,815. (No model.)

To all whom it may concer'n:

Be it known that I, WILLIAM. HARTZELL, a citizen of the United States,residing at Philadelphia, in the'county'of Philadelphia, State ofPennsylvania, have invented certain new and useful Improvements inTime-Damper Mechanism, of which the following is a specification,reference being bad to the accompanying drawings, forming part hereof.

The object of the present invention is to provide novel mechanism whichcan be set for automatically operating at predetermined pe: riods thelids and dampers of a stove, range, or other suitable heater.

The invention consists of the improvements hereinafter described andfinally claimed.

The nature, characteristic features, and scope of the invention will bemore fully understood from the following description,taken in connectionwith the accompanying drawings, forming part hereof, and in which FigureI is a front elevational view of a range or stove, showing inapplication thereto the time damper mechanism of the invention. Fig. IIis a detached side elevational view of a portion of the mechanism. Fig.III is a sectional view taken on the line 3 3 of Fig. II. Fig. IV is'asectional view taken on a line 4 4 of Fig. III, and Fig. V is a modifiedform of the device.

Referring to the drawings, or represents a stove or range, with itscomplemental firechamber 6 and ash-pit b. l

0 is an auxiliary plate adapted to be fitted to the openings ordinarilyoccupied by the lids of a stove or range. As shown in Fig. III, thisauxiliary lid consists of two members, one of which is rotatable, havingopenings adapted to register with each other. Formed integral with thebase ofthis lid is a socket 6, adapted to receive a bracket f. Fulcrumedto the bracket f is an arm 9, having depending therefrom a projection9'. Having pivotal engagement therewith is a bifurcated fingerg adaptedto engage a pin cZ, projecting from the upper member of the auxiliary.lid. Pivoted to one end of the arm g'is aforked rod h, whose functionwill appear hereinafter. The opposite end of the arm g is under springtension, as at i. If desired, a weight may be employed to cause the armyto drop by gravity". De

tachably attached to the bracket is a timepiece, as an alarm-clock,provided with the usual alarm-winding stem 7'. Adapted to rest upon thisstem is a ring or hook, which is attached to a chain or flexibleconnection 74,

which in turn is connected with thear'm g, as shown. Referring to theash-pit b the same is closed by the ordinary hinged door and itscomplemental damper. The pin or knob Z of the said damper has secured toit-springs Z In the morning the damper is opened, the

lid returned to its proper place, or the trap closed, with the resultthat the fire burns up prior to throwing on a fresh supply of coal. Bythe present invention it is calculated'to cause the fire to burn up inthe morning by automatic means in the following manner, to

wit: The alarm is set at the desired'time, and

, the auxiliary plate, together with its bracket,

having taken the place of the ordinary lid of the stove or range, theclock is suspended in 4 the manner described and the flexible member 70placed over the projection j and the forked member placed in engagementwith the part Z on the damper. The rotatable member of the auxiliary lid0 is then adjusted by hand for admitting the proper amount of air, thisbeing facilitated by the rotation of the pin d and the bifurcated memberg In the morning the alarm releases the stem 1' and the flexible memberis, whereupon the spring-controlled arm g shifts the member 9 thuscausing the closing of the auxiliary plate andforcing downward the rodh, which releases the spring Z and causes the damper to open. When thefire has burned up sufficiently, the device may obviously be detachedfrom the stove or range, the clock used for ordinary purposes, and therest of the apparatus set to one side. In the modification shown in Fig.V the auxiliary plate consists of a base having a hinged member adaptedto be left for the night in the position shown in the figure. In themorning when the alarm goes off the flexible member 70 is released, theplate falls by gravity, the rod 7b is pushed downward, and the damperopened, as hereinbefore described.

It will be obvious to those skilled in the art to which the inventionappertains that modifications may be made in detail without departingfrom the spirit thereof. Hence I wish it understood that I do not limitmyself to the recise construction and arrangement of parts erein shownand described; but,

Having thus described the nature and objects of the invention, what Iclaim as new, and desire to secure by Letters Patent, is-

1. The combination with a stove or range of an auxiliary plate or lidprovided with openings adapted to register with each other, a supportingdevice carried thereby and having fulcrumed therewith aspring-controlled arm, a member for shifting the plate operated thereby,a spring-operated damper, a clock mechanism, suspended from saidsupporting device and means for releasing the arm and damper,substantially as described.

2. The combination with a stove or range of an auxiliary plate or lidhaving openings for registering with each other, a supporting devicecarried thereby, a spring operated damper, a clock mechanism, aspringcontrolled arm having a projection, a member for shifting theplate attached thereto, a rod between the arm and the damper and aflexible member carried by the arm and adapted to be released by theclock mechanism, substantially as described.

3. The combination with a stove or range of a two-part auxiliary plateor lid having openings adapted to register with each other, one of whichparts being provided with a pin, and a supporting device carried by theother of said parts, a spring-controlled arm, fulcrumed to said supportand adapted to shift a forked member having engagement with the saidpin, a spring-controlled damper, a rod connected with the arm andadapted to release the said spring, a clock mechanism suspended from thesupport and a flexible member adapted to be released by the winding-stemof the clock to operate the arm, substantially as described.

In testimony whereof I have hereto set my hand and seal.

WILLIAM HARTZELL.

